Hi folks. Hoping to get some advice here. I got the half shaft replacement about a month ago, and I've noticed the Wh/mile increase significantly after the replacement. Before - I would average 360-380 Wh/mile. After - averaging 500 Wh/mile. No change in load, driving style, etc. The service center has already run diagnostics and physically looked at it, but can't figure out what's wrong. I noticed the increase immediately on the drive back from the service center. It's been over 1000 miles since then, and still same issue. Anyone else had this happen?
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Increase in Wh/mile after halfshaft replacement
- Thread starter HappyHappy
- Start date
What version of the car do you have? I usually get 240 to 270. The only time I go over 300 is if I am running continuously at 80 mph. My 2018 was not nearly as low as my 2022.
MobileClimate
Member
If you look at the can data with the phone app tes-LAX you can easily find out what’s causing the problem if any
2017 X 100D. I think it was rated at 330ish. But normally around town up to 380 is common because of hills and number of people/cargo in the car. But never 400+.
Yup. It's part of the half shaft replacement. Plus I paid for another after I noticed the increase in Wh/mile. So this isn't it, unfortunately.
I'll have to look more into it. I don't have an can bus reader, and don't really want to buy one to troubleshoot. You'd think Tesla should be able to see the same (or better) data. Hopefully I can leave this to plan C.
Unfortunately, they didn't give me one. Just pulled up a picture on their screen with everything in the green. I don't think I've ever gotten a print out.
Just hold your hand near the rotors and see if you feel heat coming off of them. (Don't just touch them, as they could be hot.) I would check all four just to make sure.
They should all feel the same, which is pretty much no heat coming off of them. (Unless you used the brakes a lot.)
Then it doesn't count. In California, they must give you a before/after printout or it's like the alignment was never done.
Or just hit all 4 rotors with an IR gun after miles of not braking and check the temps. Use regen to stop completely.
Thanks! Where can I find this requirement? I'm going to guess I'll need to show them.
Well, mine doesn't stop completely with Regen. Going to have to think about a route with a slight uphill at the end. In any case, I assume if it's the rotor, only one rotor will be misaligned, so if one is a lot hotter than the rest, I'll have something to point at.
Just slow down then to the 4 mph or so with regen and then use the brakes. That won't heat the rotors more than a degree if even that.
Consulting the FSM and the labor guide, it appears to be true. Alignment is not part of the replacing the half shaft probably because the procedure doesn't require unbolting any suspension components at any of the alignment adjustment ends.
